Portable sound recorder

Abstract

A portable sound recorder has a body case, a left microphone and a right microphone held rotatably by the body case. An inwardly arcuate microphone receiving cavity is formed at each upper corner of the body case. The microphone receiving cavity is configured to elevate a rear side end of its arcuate bottom surface, and surrounds the under side and a part of the rear side of the microphone. Formed on the bottom surface of the microphone receiving cavity is a hollow portion that creates a gap between the microphone receiving cavity and the microphone, so as to prevent the reflected sound off the microphone receiving cavity from reaching the microphone. The gap is maintained by the hollow portion even when the microphone is rotated.

1. A portable sound recorder having a body case containing a recording mechanism, comprising:
 at least one microphone receiving section that forms a cavity on the body case; and 
 a microphone body comprising at least one microphone and at least one coupling member that couples the at least one microphone to the body case, wherein the at least one microphone is placed in the cavity of the at least one microphone receiving section, wherein an external configuration of the at least one microphone corresponds to a recessed contour of the at least one microphone receiving section such that the at least one microphone is proximate a surface of the at least one microphone receiving section, 
 wherein the recessed contour is surrounded by the surface of the at least one microphone receiving section, such that the recessed contour of the at least one microphone receiving section creates a reflected sound wave reduction gap between the recessed contour of the at least one microphone receiving section and the at least one microphone. 
 
     
     
       2. The portable sound recorder of  claim 1 , wherein said body case has a flat rectangular parallelepiped shape, and said microphone receiving section removes an edge between top and front surfaces of said body case. 
     
     
       3. The portable sound recorder of  claim 2 , wherein said at least one microphone is held rotatably at an upper portion of said body case. 
     
     
       4. The portable sound recorder of  claim 2 , wherein said at least one microphone comprises:
 a cylindrical transducer chamber formed on one side of said microphone body, said transducer chamber having openings on an outer peripheral surface and an end surface thereof; 
 a transducer in said transducer chamber and arranged inclined to said outer peripheral surface and said end surface, so as to convert sound into an electric signal; and 
 a microphone cap for covering said transducer chamber, 
 wherein said microphone body is held rotatably at an upper portion of said body case. 
 
     
     
       5. The portable sound recorder of  claim 4 , wherein microphone receiving sections are formed on left and right sides of said body case, and microphones are provided on both sides of said body case. 
     
     
       6. The portable sound recorder of  claim 5  further comprising:
 a handle for rotating said microphone body and oriented to correspond to the orientation of said transducers. 
 
     
     
       7. The portable sound recorder of  claim 6 , wherein said handle fixes each said microphone cap to said microphone body.